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Finding the Fourth Proportional to 163,455.32, 225,566.80 and 90,856.32

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Solution

The fourth proportional to 163,455.32, 225,566.80 and 90,856.32 is: 125,380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,455.32 : 225,566.80 = 90,856.32 : x
  2. Step 2: Convert to fraction form
    163,455.32/225,566.80 = 90,856.32/x
  3. Step 3: Cross multiply
    163,455.32x = 225,566.80 × 90,856.32
  4. Step 4: Simplify right side
    163,455.32x = 20,494,169,362.18
  5. Step 5: Solve for x
    x = 20,494,169,362.18/163,455.32
  6. Step 6: Final answer
    x = 125,380.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.